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Refractories and Industrial Ceramics

, Volume 59, Issue 1, pp 42–47 | Cite as

Investigation of the Formation of a Fine-Crystalline Alumina Coating on the Surface of a Blank Aluminum Powder Coating Test Panel as a Result of its Filtration Combustion

  • D. A. Ivanov
  • A. I. Sitnikov
  • G. E. Val’yano
  • S. D. Shlyapin
Article
  • 16 Downloads

Formation of a fine-crystalline α-Al2O3 coating on the surface of an aluminum blank powder coating test panel by filtration combustion (FC) in air was investigated. Finely ground sodium silicate glass (1 vol.%) introduced into the composition of the blank aluminum panels was used as the activating agent of the filtration combustion. It was found that a fine-crystalline aluminum oxide coating with a thickness of 30 – 50 μm with crystals ranging 0.1 – 2.0 μm in size forms over the entire surface of the sample upon completion of the filtration combustion. The properties of the produced samples were as follows: density 2.3 g/cm2, open porosity 15%, ultimate bending stress 120 MPa, fracture toughness 3.6 MPa·m1/2, Brinell hardness 32.

Keywords

aluminum oxide coating powder coating test panel finely ground sodium silicate glass reaction sintering filtration combustion (FC) self-propagating high-temperature synthesis (SHS) chemical vapor transport reactions 

Notes

The studies were carried out within the framework of the basic part of the state task to universities No. 11.7568.2017/B4 using equipment at the “Aerospace Materials and Technologies” collective resource center of the MAI.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • D. A. Ivanov
    • 1
  • A. I. Sitnikov
    • 2
  • G. E. Val’yano
    • 3
  • S. D. Shlyapin
    • 1
  1. 1.Moscow Aviation Institute (National Research University)MoscowRussia
  2. 2.Joint Institute for High Temperatures of the Russian Academy of SciencesMoscowRussia
  3. 3.A. A. Baikov Institute of Metallurgy and Materials Science (IMET) of the Russian Academy of Sciences (RAS)MoscowRussia

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